i used the program to see if my flight was oversold, close to oversold or had First availabilty but the same flight has two different seats available. Why is that and which one is correct?

Departs
Charlotte (CLT)
November 18
5:14 pm Arrives
Atlanta (ATL)
November 18
6:31 pm Notes
Cabin class: F0 A0 Y9 B7 M0 H0 Q0 K0 L0 U0 T0

Delta Airlines
Flight: 661
Departs
Atlanta (ATL)
November 18
8:56 pm Arrives
Tucson (TUS)
November 18
10:53 pm Notes
Cabin class: F0 A0 Y7 B5 M1 H1 Q0 K0 L0 U0 T0

or


Flight: 4898
(Operated by Atlantic Southeast Airlines)
Departs
Charlotte (CLT)
November 18
6:21 pm Arrives
Atlanta (ATL)
November 18
7:37 pm Notes
Cabin class: Y4 B0 M0 H0 Q0 K0 L0 U0 T0
JetCanadair Jet


Delta Airlines
Flight: 661
Departs
Atlanta (ATL)
November 18
8:56 pm Arrives
Tucson (TUS)
November 18
10:53 pm Notes
Cabin class: F0 A0 Y1 B0 M0 H0 Q0 K0 L0 U0 T0

The second flight is what i am questioning. The first option says there is 14 seats and the second says only one Y seat. need clarification.